Gates 10-IDL-BRAK Idler Bracket with bolt thread 3/4 - 16for use with 1610-IDL-BUSH 8mm Pitch Idler Sprockets, 4.25" OD Flat Idler Pulleys, 2012-IDL-BUSH, 2517-IDL-BUSH, 20-IDL-BUSH (SK) 14mm Pitch Idler Sprockets, 6.50" OD Flat Idler Pulleys, 30-IDL-BUSH (SF), 40-IDL-BUSH (E). Gates Product ID 7720-1010